Abstract: According to detailed analyses of principles of the servo pump system and electric control and PLC (programmable logic controller) servo motor control, the existing sintering press is improved by using the servo pump system to replace the control system of the electro-hydraulic proportional value.After the improvements which are widely accepted by customer, it shows that the pressure control precision of servo hydraulic system in sintering press is ±0.1 MPa, the noise is reduced from 65 dB to 45 dB, and the tank temperature is lowered to 12.5℃than without improvement.It is also found that the hydraulic components life are extended, equipment maintenance cost is lowered and the stability of sintering press is improved.